JPWO2021106079A5 - - Google Patents
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- JPWO2021106079A5 JPWO2021106079A5 JP2021560805A JP2021560805A JPWO2021106079A5 JP WO2021106079 A5 JPWO2021106079 A5 JP WO2021106079A5 JP 2021560805 A JP2021560805 A JP 2021560805A JP 2021560805 A JP2021560805 A JP 2021560805A JP WO2021106079 A5 JPWO2021106079 A5 JP WO2021106079A5
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- Prior art keywords
- refrigerant
- circulation amount
- switching device
- evaporators
- flow velocity
- Prior art date
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- 239000003507 refrigerant Substances 0.000 claims 45
- 238000005057 refrigeration Methods 0.000 claims 1
Claims (6)
前記冷媒回路は、
圧縮機と、
凝縮器と、
絞り装置と、
複数の蒸発器と、
前記複数の蒸発器の接続が直列接続となるか並列接続となるかを切り替えるように構成された切替装置とを含み、
前記冷媒回路は、前記圧縮機、前記凝縮器、前記絞り装置、前記複数の蒸発器の順に冷媒が循環するように構成され、
前記制御装置は、前記冷媒回路に封入される冷媒の種類と、前記冷媒回路における前記冷媒の循環量とに基づいて、前記切替装置を制御し、
前記圧縮機が吸入する冷媒の温度を検出する温度センサと、
前記圧縮機が吸入する冷媒の圧力を検出する圧力センサとをさらに備え、
前記制御装置は、前記圧縮機の運転周波数と前記温度センサの出力と前記圧力センサの出力とに基づいて、前記循環量を算出するように構成され、
前記制御装置は、求めた前記循環量が判定値を下回る場合は冷媒流速を速くするために前記複数の蒸発器を直列に繋げ、前記判定値を上回る場合は冷媒流速を遅くするために前記複数の蒸発器を並列に繋げるように前記切替装置を制御するように構成される、冷凍装置。 Equipped with a refrigerant circuit and a control device,
The refrigerant circuit is
With a compressor,
Condensator and
Aperture device and
With multiple evaporators,
Including a switching device configured to switch whether the connection of the plurality of evaporators is a series connection or a parallel connection.
The refrigerant circuit is configured so that the refrigerant circulates in the order of the compressor, the condenser, the throttle device, and the plurality of evaporators.
The control device controls the switching device based on the type of the refrigerant enclosed in the refrigerant circuit and the circulation amount of the refrigerant in the refrigerant circuit.
A temperature sensor that detects the temperature of the refrigerant sucked by the compressor, and
Further equipped with a pressure sensor for detecting the pressure of the refrigerant sucked by the compressor,
The control device is configured to calculate the circulation amount based on the operating frequency of the compressor, the output of the temperature sensor, and the output of the pressure sensor.
In the control device, when the obtained circulation amount is less than the determination value, the plurality of evaporators are connected in series in order to increase the refrigerant flow rate, and when the determination value is exceeded, the plurality of evaporators are connected in order to slow down the refrigerant flow rate. A refrigerating device configured to control the switching device so as to connect the evaporators of the above in parallel .
前記制御装置は、
前記冷媒回路に封入される冷媒が、前記第１冷媒である場合には、前記循環量が第１循環量よりも少ないときに前記切替装置を直列接続に設定し、前記循環量が前記第１循環量よりも多いときに前記切替装置を並列接続に設定し、
前記冷媒回路に封入される冷媒が、前記第２冷媒である場合には、前記循環量が第２循環量よりも少ないときに前記切替装置を直列接続に設定し、前記循環量が前記第２循環量よりも多いときに前記切替装置を並列接続に設定するように構成される、請求項１に記載の冷凍装置。 The refrigerating device can be used for both the first refrigerant and the second refrigerant.
The control device is
When the refrigerant enclosed in the refrigerant circuit is the first refrigerant, the switching device is set to be connected in series when the circulation amount is smaller than the first circulation amount, and the circulation amount is the first circulation amount. When the circulation amount is larger than the circulation amount, the switching device is set to parallel connection, and the switching device is set to parallel connection.
When the refrigerant enclosed in the refrigerant circuit is the second refrigerant, the switching device is set to be connected in series when the circulation amount is smaller than the second circulation amount, and the circulation amount is the second circulation amount. The refrigerating device according to claim 1, wherein the switching device is set to be connected in parallel when the circulation amount is larger than the circulation amount.
前記第２冷媒は、流速が第２流速である場合に、前記複数の蒸発器の各々における熱伝達率がピークを示し、
前記第２流速は、前記第１流速よりも高速である、請求項２に記載の冷凍装置。 The first refrigerant has a peak heat transfer coefficient in each of the plurality of evaporators when the flow velocity is the first flow velocity.
The second refrigerant has a peak heat transfer coefficient in each of the plurality of evaporators when the flow velocity is the second flow velocity.
The refrigerating apparatus according to claim 2, wherein the second flow velocity is higher than the first flow velocity.
冷媒回路と制御装置とを備え、
前記冷媒回路は、
圧縮機と、
凝縮器と、
絞り装置と、
複数の蒸発器と、
前記複数の蒸発器の接続が直列接続となるか並列接続となるかを切り替えるように構成された切替装置とを含み、
前記冷媒回路は、前記圧縮機、前記凝縮器、前記絞り装置、前記複数の蒸発器の順に冷媒が循環するように構成され、
前記制御装置は、前記冷媒回路に封入される冷媒の種類と、前記冷媒回路における前記冷媒の循環量とに基づいて、前記切替装置を制御し、
前記冷凍装置は、第１冷媒および第２冷媒のいずれにも使用可能であり、
前記制御装置は、
前記冷媒回路に封入される冷媒が、前記第１冷媒である場合には、前記循環量が第１循環量よりも少ないときに前記切替装置を直列接続に設定し、前記循環量が前記第１循環量よりも多いときに前記切替装置を並列接続に設定し、
前記冷媒回路に封入される冷媒が、前記第２冷媒である場合には、前記循環量が第２循環量よりも少ないときに前記切替装置を直列接続に設定し、前記循環量が前記第２循環量よりも多いときに前記切替装置を並列接続に設定するように構成され、
前記第１冷媒は、流速が第１流速である場合に、前記複数の蒸発器の各々における熱伝達率がピークを示し、
前記第２冷媒は、流速が第２流速である場合に、前記複数の蒸発器の各々における熱伝達率がピークを示し、
前記第２流速は、前記第１流速よりも高速である、冷凍装置。 It ’s a refrigeration system.
Equipped with a refrigerant circuit and a control device,
The refrigerant circuit is
With a compressor,
Condensator and
Aperture device and
With multiple evaporators,
Including a switching device configured to switch whether the connection of the plurality of evaporators is a series connection or a parallel connection.
The refrigerant circuit is configured so that the refrigerant circulates in the order of the compressor, the condenser, the throttle device, and the plurality of evaporators.
The control device controls the switching device based on the type of the refrigerant enclosed in the refrigerant circuit and the circulation amount of the refrigerant in the refrigerant circuit.
The refrigerating device can be used for both the first refrigerant and the second refrigerant.
The control device is
When the refrigerant enclosed in the refrigerant circuit is the first refrigerant, the switching device is set to be connected in series when the circulation amount is smaller than the first circulation amount, and the circulation amount is the first circulation amount. When the circulation amount is larger than the circulation amount, the switching device is set to parallel connection, and the switching device is set to parallel connection.
When the refrigerant enclosed in the refrigerant circuit is the second refrigerant, the switching device is set to be connected in series when the circulation amount is smaller than the second circulation amount, and the circulation amount is the second circulation amount. It is configured to set the switching device to parallel connection when it exceeds the circulation amount.
The first refrigerant has a peak heat transfer coefficient in each of the plurality of evaporators when the flow velocity is the first flow velocity.
The second refrigerant has a peak heat transfer coefficient in each of the plurality of evaporators when the flow velocity is the second flow velocity.
The second flow velocity is faster than the first flow velocity , the refrigerating apparatus.
前記第２冷媒は、Ｒ４６３Ａ，Ｒ４０４Ａのいずれかである、請求項２～４のいずれか１項に記載の冷凍装置。 The first refrigerant is any of R410A, R32, and R22.
The refrigerating apparatus according to any one of claims 2 to 4, wherein the second refrigerant is any of R463A and R404A.
前記冷媒の種類を設定する設定部と、
前記冷媒の種類を記憶する記憶部と、
前記記憶部に記憶された冷媒の種類に基づいて前記切替装置を制御する制御部とを含む、請求項１～５のいずれか１項に記載の冷凍装置。 The control device is
A setting unit that sets the type of refrigerant, and
A storage unit that stores the type of refrigerant, and
The refrigerating device according to any one of claims 1 to 5 , which includes a control unit that controls the switching device based on the type of refrigerant stored in the storage unit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/046182 WO2021106079A1 (en) | 2019-11-26 | 2019-11-26 | Refrigeration apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2021106079A1 JPWO2021106079A1 (en) | 2021-06-03 |
| JPWO2021106079A5 true JPWO2021106079A5 (en) | 2022-01-14 |
| JP7150198B2 JP7150198B2 (en) | 2022-10-07 |
Family
ID=76128668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021560805A Active JP7150198B2 (en) | 2019-11-26 | 2019-11-26 | refrigeration equipment |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7150198B2 (en) |
| WO (1) | WO2021106079A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261691A (en) * | 1995-03-22 | 1996-10-11 | Shinko Kogyo Co Ltd | Heat exchanger |
| JPH10332211A (en) * | 1997-06-03 | 1998-12-15 | Hitachi Ltd | Air conditioner |
| JP2002243296A (en) * | 2001-02-20 | 2002-08-28 | Fujitsu General Ltd | Air conditioner |
| JP2011220616A (en) * | 2010-04-09 | 2011-11-04 | Hitachi Appliances Inc | Refrigeration apparatus |
| JP5927415B2 (en) * | 2011-04-25 | 2016-06-01 | パナソニックＩｐマネジメント株式会社 | Refrigeration cycle equipment |
-
2019
- 2019-11-26 WO PCT/JP2019/046182 patent/WO2021106079A1/en active Application Filing
- 2019-11-26 JP JP2021560805A patent/JP7150198B2/en active Active
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